{"id":"F2006B01792","name":"AD/750XL/1 - Aileron and Elevator Pushrods","slug":"ad-750xl-1-aileron-and-elevator-pushrods","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":40990,"registerId":"commonwealth-F2006B01792-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n![](image.001.png)  \n\nPacific Aerospace 750XL Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/750XL/1 Aileron and Elevator Pushrods","sectionType":"part","heading":"AD/750XL/1 Aileron and Elevator Pushrods 9/2004","content":"# AD/750XL/1 Aileron and Elevator Pushrods 9/2004\n\nTX\n\nApplicability: Model 750XL aircraft, with serial numbers up to and including 107. Requirement: 1. Inspect the aileron and elevator pushrod ends in accordance with Pacific\n\nAerospace Mandatory Service Bulletin (MSB) PACSB/XL/007.\n\nIf there is any detectable play between the pushrod and the insert, before further flight, replace the rivets in accordance with MSB PACSB/XL/007.\n\n2. Replace the aileron and elevator pushrod insert rivets in accordance with MSB PACSB/XL/007.\n\nNote 1: Replacement of loose rivets in an aileron or elevator pushrod insert is terminating action for further inspection of the insert that has had affected rivets replaced.\n\nNote 2: NZ CAA AD DCA/750XL/1 refers.\n\nCompliance: 1. Within 10 hours time in service after 28 June 2004; thereafter at intervals not to exceed 150 hours time in service, until affected rivets are replaced.\n\n2. Within 600 hours time in service after 28 June 2004.\n\nThis Airworthiness Directive becomes effective on 28 June 2004.\n\nBackground: Reports were received of loose rivets that secure the threaded inserts in the ends of the aileron and elevator control pushrods.\n\n![](image.002.png)  \n\nJames Coyne\n\nDelegate of the Civil Aviation Safety Authority 25 June 2004\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 28 June 2004.","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: addressing a specific mechanical defect in a specific aircraft type. There is no evidence of scope creep — it targets exactly the unsafe condition described in the background (loose rivets in pushrod inserts) and prescribes precisely the corrective actions required."},"complexity_factors":["Very short document (approximately 250 words)","Only 2 defined compliance actions (inspection and replacement)","Single applicability criterion (aircraft model and serial number range)","No nested exceptions or conditional logic beyond basic time-in-service thresholds","Clear termination condition (Note 1 explicitly states when inspections stop)","Single cross-reference to related New Zealand aviation authority directive"],"plain_english_summary":"This mandatory Airworthiness Directive requires owners/operators of Pacific Aerospace 750XL aeroplanes (serial numbers 107 and below) to inspect the threaded inserts on aileron and elevator pushrod ends for loose rivets and to replace those rivets. Inspections begin within 10 flying hours and recur every 150 hours until the rivets are replaced, with replacement to be completed within 600 flying hours. The fix prevents potential loss of roll or pitch control."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD applies only to Model 750XL aircraft with serial numbers up to and including 107 and prescribes inspection and rivet-replacement corrective action to address reports of loose rivets; it does not expand beyond that safety correction. The AD makes replacement a terminating action for further inspections of affected inserts (Requirement; Note 1; Compliance)."},"complexity_factors":["Narrow technical focus: addresses a specific hardware item (aileron/elevator pushrod insert rivets) which reduces regulatory breadth but requires technical maintenance actions (Requirement 1 & 2).","External dependency: mandates compliance with Pacific Aerospace Mandatory Service Bulletin PACSB/XL/007 rather than setting all technical steps in the AD (Requirement).","Multiple compliance timelines: initial inspection within 10 hours TIS, recurring inspections every 150 hours until replacement, and full replacement within 600 hours (Compliance 1 & 2).","Limited applicability by serial number (Model 750XL, serial numbers up to and including 107) which concentrates obligations on a subset of fleet (Applicability).","Operational and cost impact falls on aircraft operators/owners who must perform inspections, replace rivets, and potentially ground aircraft during work (Requirement; Compliance).","Terminology and cross-reference complexity: refers to CASR subregulation 39.1(1) for issuing authority and cites NZ CAA AD DCA/750XL/1 (preamble; Note 2)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Pacific Aerospace 750XL aircraft (serial numbers up to and including 107) to inspect the aileron and elevator pushrod ends and to replace loose or all insert rivets in accordance with Pacific Aerospace Mandatory Service Bulletin PACSB/XL/007. CASA (via its delegate) sets short compliance windows—an initial inspection within 10 hours TIS, repeat inspections every 150 hours until replacement, and full rivet replacement within 600 hours—so operators pay for inspections/repairs and must take aircraft out of service as needed to comply."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-750xl-1-aileron-and-elevator-pushrods","history":"/api/acts/ad-750xl-1-aileron-and-elevator-pushrods/history","analysis":"/api/acts/ad-750xl-1-aileron-and-elevator-pushrods/analysis","conflicts":"/api/acts/ad-750xl-1-aileron-and-elevator-pushrods/conflicts","importantCases":"/api/acts/ad-750xl-1-aileron-and-elevator-pushrods/important-cases","documents":"/api/acts/ad-750xl-1-aileron-and-elevator-pushrods/documents"}}